AH1889-Z-7 Diodes Incorporated

AH1889 HIGH SENSIVITY DUAL UNIPOLAR HALL-EFFECT SWITCH Description Pin Assignments AH1889 is a high sensitivity dual output Unipolar Hall effect IC which can detect either a North or South pole independently and switch one of its two outputs with internal pull up and pull down capability. The (Top View) AH1889 is mainly designed for low voltage applications which require a quick response time and can operate over the supply voltage of 1.65V to 3.6V. To minimize PCB space AH1889 outputs have internal pull up and pull down capability and is packaged in a small low profile SOT553 package. A South pole of sufficient strength will turn OUTPUT1 on and a North pole of sufficient strength with turn on OUTPUT2. While the magnetic flux density (B) perpendicular to the package is larger than operate point Bops or Bopn, the appropriate output will be turned on (pulled SOT553 low), the output is held until B is lower than release point Brps or Brps, then turned off (high). The outputs will be turned off and will remain off when there is no magnetic field. Applications Features Position and proximity detection for consumer, office equipments Two Monolithic Unipolar Hall Effect Sensor Switch and industrial applications Operation with a South Pole (OUTPUT1) Open and close detect switches for home appliances Operation with a North Pole (OUTPUT2) Door, lids, tray position detect switches Supply Voltage of 1.65V to 3.6V Magnetic field direction detection Quick Response Time Without Sleep Mode Contact-less switches for consumer and industrial applications Chopper Stabilized Design Provides: Superior Temperature Stability Extremely low Switch-Point Drift Enhanced immunity to physical stress Good RF Noise Immunity -40C to +85C Operating Temperature ESD (Human Body Model) >4kV Small and Low Profile SOT553 package Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. Green Device (Note 3) Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See Offset Offset Cancelling Cancelling AH1889 Pin Descriptions Package: SOT553 Pin Pin Function Number Name 1 OUTPUT2 North Pole Setecting Output Pin (active low) 2 GND Ground 3 NC No Connection (Note 5) 4 Power Supply Voltage V DD 5 OUTPUT1 South Pole Detecting Output Pin (active low) Note: 5. NC is No Connection pin and is not connected internally. This pin can be left open or tied to ground. Functional Block Diagram Absolute Maximum Ratings (Note 6) ( T = +25C, unless otherwise specified.) A Symbol Characteristics Values Unit V Supply Voltage (Note 7) 5 V DD V Reverse Supply Voltage -0.3 V DD REV I Output current (source and sink) 1 mA OUTPUT B Magnetic Flux Density Unlimited P Package Power Dissipation SOT553 230 mW D Ts Storage Temperature Range -65 to +150 C Maximum Junction Temperature 150 T C J ESD Human Body Model ESD capability 4 kV Notes: 6. Stresses greater than the Absolute Maximum Ratings specified above may cause permanent damage to the device. These are stress ratings only functional operation of the device at these or any other conditions exceeding those indicated in this specification is not implied. Device reliability may be affected by exposure to absolute maximum rating conditions for extended periods of time. 7. The absolute maximum V of 6V is a transient stress rating and is not meant as a functional operating condition. It is not recommended to operate the DD device at the absolute maximum rated conditions for any period of time. 2 of 7 April 2013 AH1889 Diodes Incorporated www.diodes.com Document number: DS36256 Rev. 1 - 2 NEW PRODUCT